Bianca makes an initial deposit to open a savings account. she then makes monthly deposits of equal amounts. the balance in her account is given by the function equation b = 150 + 80d, where b is her account balance and d is the number of monthly deposits she makes.
what is the meaning of the slope in this equation?
a.
bianca deposits $80/month.
b.
bianca deposits $150/month.
c.
bianca makes an initial deposit of $80.
d.
bianca makes an initial deposit of $150.